Planet-mimicking variability in Gamma Draconis (Eltanin)

Hatzes et al. "The Radial Velocity Variability of the K-giant Gamma Draconis: Stellar Variability Masquerading as a Planet"
https://arxiv.org/abs/1801.05239

Combined with the fact that several proposed multiplanet systems around K-giants are dynamically unstable, this raises the possibility that quite a few of the planet candidates around K-giants are actually the effect of intrinsic stellar variability.

Who knows? I want to think that it may even be the contrary...

More on the quasi-periodic RV variations of Gamma Draconis: looks like there's a ~15-day oscillation as well. This cannot be a planet either, because a planet with a 15-day orbit would be located inside the star.

Delgado & Dodson-Robinson "Modeling the quasiperiodic radial velocity variations of gamma Draconis"
https://arxiv.org/abs/2009.06506